Finding the Fourth Proportional to 23,498.51, 32,428.77 and 12,888.19

Step by Step Solution

1. Step 1: Write the proportion equation
   23,498.51 : 32,428.77 = 12,888.19 : x
2. Step 2: Convert to fraction form
   23,498.51/32,428.77 = 12,888.19/x
3. Step 3: Cross multiply
   23,498.51x = 32,428.77 × 12,888.19
4. Step 4: Simplify right side
   23,498.51x = 417,947,987.08
5. Step 5: Solve for x
   x = 417,947,987.08/23,498.51
6. Step 6: Final answer
   x = 17,786.15